Flanged pipe.



G. GORDON. FLANGED PIPE.

APPLICATION rum) JAN. 1a, 1908.

- Patented Nov. 23, 1909;

n 0 d y wfi & .ns It 6 It mm [ha 59 8 Wm nf UNITED STATES PATENT OFFICE. cnnnnns connoiv, or'nnn'rronn, commcrrcnr, nssmnon 'ro wnrrmck coin PIPE COMPANY, or wns'r nnnrronn, connnc'rrcu'nn conronnrron or CONNECTICUT.

.FLANGED PIPE.

To all whom it may concern:

Be it known that I, CHARLESfGORDON, a

citizen of the United States, residing. at I Hartford, in the county of'Hartford and State of Connecticut, have invented a new and useful Improvement in a Flanged Pipe,

- my invention.

Similar reference figures'referto similar, parts in the View.

Referring to the accom anying drawings 1 denotes the pipe, 2 a co ar applied thereto, having'a flange 3 in which bolt holes'4 are provided to enable the flanges of the pipes to be coupled together. The collar 2 is provided with an annular recess 5 adapted to receive-a flange 6, formed by upsetting the end of the ipe; The metal at the 'en of the pipe whic is upset to form the flange -6 is indicated in the drawings by broken lines 7 a sufiicient amount of metal is u set to closely fill the annular recess 5. he

flange 6 formed on the end of the pipe and integral therewithis compressed into the annular recess 5, and the flange 6 and collar'2 are then welded together at the contacting annular surfaceS, securelyuniting the pipe '1 and collar 2.

In carryin my lnvention into'practice I apply the co ar 2 in a heatedstate to the en of the pipe and perform the operation e end of the pipe and weld-. ing the joint between the collar andflange 6,

of. upsetting t while the collar and the end of the pipe are the face ofthe flan both hot, causin the, be e runk uponthecend o the pipe in cooling. In forming the integral flange 6 upon the end of the ipe, 'I, referably bring the face 9 of the I ange su stantially into the plane of- 3, and I also preferably form a right ang ed corner at 10,50 that when the separate .lengths of pipe 'are' 7 I Specification of Letters Patent. "Application filed January 16, 1908. Serial No. 411,097.

Patented Nov.23, 1909.

coupled together,-no'recesses or pockets Wlll occur at the joints of the pipe.

Byapplying the welding process to the outer edge of the integral flange 6, I do not weaken the end of the .p pe by any excessive heat employed-in'weldmg.

I also form a groove 11 in the inner wall of the annular recess 5, which may be of any desired shape in cross section, but preferably semicircular as shown. In the operation of upsetting the end of the pipe suflicient metal is forced into the groove 11 to substantially fill the same and form a rib 12 /which resists any strain tending to move the collar longitudinall on the pipe.

The groove ll'is pre erably formed at the bottom of the annular recess 5, so that, when semicircular in cross section, it will do away with the angular corner at the bottomof the recess and thereby 'facilitatethe complete filling of the recess and groove by the metal as the end of the pipe is upset. Y I claim: v

1. A pipe having a flanged collar applied to its outer surface, said collar having an interior annular recess open at the top, with the lower wall of said recessat right angles 'to the axis of the pipe and wider than the .openin at the top 0 said recess, and with the on of the pipe upset to form an exterior flange arranged to contact with the walls of sa d. recess.

'2. A pipe-having a flanged collar applied to its outer'surface, said collar having an interior annular'recess open at the top, with its lower wall'at right .angles to the axis of "said pipe, with its outer wall provided with a groove below the top, and with the pipe upset to form an exterior flange arranged to contact with the walls of said recess. Dated this fourth daytof January 1908. CHA LES GORDON. Witnesses: ARTH T. HYDE,

J. B. 'Mnnrnml 

